Car-brake.



Patented lan. 9, |900. C. A. KRUSE.

CAR BRAKE.

Application fled'Nov. 6, 1899.)

No` Model.;

2 Sheets-Sheet l.

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No. 4,92|. i Pafenfed 1an. 9, |900.

c. A. KusE.

'ma Nokms PETERS co., PHnToLr'rno.. wAsnxNawu o c iinrrnn STATES PATENT FFICE.

CHARLES A. KRUSE, OF PHILADELPHIA, PENNSYLVANIA.

CAR-BRAKE.

srncrrrcArIoN forming part of Letters Patent No. 640,921, cated January 9, 1900.

Application filed November 6, 1899. Serial No. 735,964. (No model.)

To whom it may concern: l

Be it knownfthat I, CHARLES A. KRUsE, a citizen of the United States, residing in West Philadelphia, in the county of Philadelphia' and State of Pennsylvania, have invented certain new and useful Improvements in Car- Brakes, of which the following is a specificay penditure of energy an appreciable force is produced and adapted to be transmitted to the brake-shoes of a car to hold the same under reliable control. The principal means for operating the brakeeshoes are based upon the principle of a wedge which requires a slight forward movement, which is transmitted to the same by comparatively little energy or force exerted to produce an appreciable side pressure which when utilized is adapted to readily or quickly apply the brake-shoes to the wheels of the car and in such manner as to bring the carto a standstill without jar or undue forward thrust. This wedge action in the present invention is obtained by a sector, the curved surface of which is eccentric to the fulcrumal point of the frame. The curved inclined portion of the sector positively guided is oscillated about a fixed point to produce a back-and-forth movement to its fulcrumed end. This forward movement is transmitted to the brake-shoes of the car and through the same to the car-wheels and which movement necessary to apply the brake to the car-Wheels is a slight one,c0nsequent upon the distance which the inclined surface of the sector has to travel to produce this movement, so that the brake can be applied by a few revolutions of the handle of the brake -operating rod, thereby insuring a powerful braking action. The means for transmitting the movement of the sector in the present invention preferably consists of a bail-shape yoke, which is in pivotal connection with the brake-shoes of the car.

My invention, stated in general terms, consists of a can-brake when constructed and arranged in substantially the manner hereinafter described and claimed. l

The nature and characteristic features of my invention will rbe more'fully understood from the following description, taken in connection with the accompanying drawings, forming part hereof, in which-- Figure l is a longitudinal elevation, partly in section, of a brake mechanism at each eX- tremity of a motor-car embodying the main features of my invention.` neath View, partly in elevation and partly in section, of said brake mechanism, showing the detailed construction and arrangement of the same. Fig. 3 is an enlarged sectional view of one end of the car with said .brake mechanism applied thereto. Fig. 4t is a crosssectional view of the yoke of said brake mechanism and also the means for guiding said yoke under the action of the sector device of Fig. 2; and Fig. 5 is an enlarged sectional view of the front end of the sector device, with its teeth and the pinion carried by the brake-operating rod for controlling the movement of said sector device in connection with said pinion.

Referring to the drawings, a is a car or vehicle of any suitable construction, preferably to the bottom of which and at either end thereof is arranged a sector ZJ. The curved portion b of the sector b is eccentrically ar ranged to the other end b2, engaged by abolt b3 and forming an incline or cam portion. The face of the cam portion b of the sector b is provided with teeth b4 and with a smooth portion b5, opposite which a roller c of a rod c' is arranged, the upper free end of which carries a handle c2. Above the roller engaging the smooth portion b5 of the face of the sector and rigidly secured to the rod c is lo- Fig. 2 is an undercated a pinion d, engaging the teeth b of the ing the inclined portion of thesector from the position illustrated in full lines in"Fig. 2 to an opposite position the inclined curved por- IOO 5 fof the car.

tion b' will impart to the end b2 a forward movement toward the center of the car,which movement is transmitted to a preferably bailshape yoke e, connected with the brake-shoes The brake-shoes through this forward movement of the sector will be applied to the wheels of the car and held under control. The sector b,with its fulcrumed end b2, is connected to a coupling-piece g, the front end of which carries the bolt b3, to which the end b2 of the sector b is secured. To the upper end of said bolt b3 is secured a roll h, provided with a iiange h. This liange h engages two angle-irons and ol, holding thereby the end b2 of the sector b in position. The side thrust impartedto the bolt bi" of the end b2 of the sector b during the oscillating mov-ement of its inclined cnrved end b will be compensated by said roll h and the angle-ironsA V the yoke e and held in connection therewith `bynneans of a bolt g2 passing through vsaid yoke and through the slots g3 and g4, arranged in the free end of the coupling-pieceg, for a purpose to be presently fully explained.

To the yoke e and its bolt 'g2 is secured the end of a rod It, the opposite end of which is pivoted to a lever-arm 7c', preferably pivotally secured to the bottom of the car. To the 'opposite end of said lever-arm 7c is pivoted a rod k2, the end of which is pivotally secured to a bail-shape yoke e', slidable in a couplingpiece g of the same construction and arrangement as hereinbefore described.` The forward movement of the end h2 of the sector h', by means of the bolt b3, will be transmitted to the coupling-piece g, and by the same to the yoke e at one end of the car and through the intervention of the rods 7c and k2 and le- Ver-arm 7c t0 the yoke e at the opposit'eend of the car. It will4 therefore be understood from the foregoing description that the brakeshoes f and f will be readily applied to the wheels at each end of the carto bring the latter under control as to the movement thereof.

The inclined curved portion b of the sector b is engaged' by a guide-roll Z, which by the return movement of the inclined portion b' of the sector to the position indicated in full lines in Fig. 2 will impart to the end h2 of the said sector b a backward movement, which will not be transmitted to the respective yokes e and e. The lever-arm k has attached thereto a spiral spring in, the opposite end of which springis preferably secured to the car-bottom, as illustrated in Fig. 2 of the drawings. The forward thrust imparted to the yokes e and e' will bring the spiral spring m under tension, which by the return of the sector b to its normal position will shift the respective yokes e and e' back into their normal position in engagement with the coupling-piece g thereof. The bolt g2 of the respective yokes c and e', to which the connecting-rods 7c and k2 are pivotally secured, as illustrated in Figs. 2 and 3 of the drawings, is provided with a rollo, having a nange o', engaging the angle-irons t' and t". This roll 0 not only supports the yokes e and e', but also takes up the side thrust imparted to the bolts g2 by the operation of the connecting-rods 7c and 7a2. angle-irons t' and t' in the manner hereinbefore explained in connection with the roll h and bolt b3 of the end b2 of the sectorv b. The pinion d engaging the teeth b4 of the inclined curved portion o of the sector b and the roller c engaging the smooth portion b5 thereof are preferably arranged or located in la bracket p, secured to either end 'of the car-bottoni. The roll Z engaging the rear face of the inclined curved portion b 'of the sector Z9 is also located in said bracket 1o'. 4 derstood that all the strain imparted to the wheels of the car ythrough the brake-shoes and by the same to the yokes and sectors will be taken up by said brackets p. Moreover, the inclined cnrved portion of the sectors b will be positively guided between the pinion d and the rolls c and l in said bracket p, supporting the front end of each sector of the brake-operating mechanism of my said invention. i p

Havingthus described the natire andobject of my invention, what I claim as new, and desire to secure by Letters Patent, i`s- 1. A car-brake provided with a sector having a curved face at one end and pivoted at its other end, a pinion adaptedto mesh with the curved face of said sector to oscillate the same so as to impart respectively back-andforth movements thereto and a yoke adapted to transmit one of the movements of said sector to the brake-shoes to engage the wheels of the car, substantially as and for the pur` poses described.

2. 'A car-brake, comprising a sector having 'a curved-portion at one end eccentrically arranged with respect to the fulcrumal point at the other end, rollers adapted to guide said inclined portion, a pinion positively, driven and adapted to engage teeth arranged on the face of the curved portion of said sector and to oscillate such portion against one of said rollers so as to impart a back-and-fortli movement to the fnlcrumal end of said sector, and means connected with said vsector and brakeshoes adapted to transmit the forward thrust of "said 'sector to the brakeshoes of the wheels of the car, ysubstantially as and for the purposes described.

3. A 'car-brake, comprising a sector having a earn -snrface at one end provided with smooth and toothed portions, a roller and a pinion adapted to engage said portions to iinpart to the fulcrumal end longitudinal movement atY right angles to said curved portion,l and a yoke connected with said cam-sector This thrust will be taken up by the It will thus be un- IOO adapted to transmit the movement in one direction to the brake-shoes of the car-wheels, substantially as and for the purposes described.

4. A car-brake, comprising a cam-sector, a pinion and rollers adapted to engage said cam-sector at one end to impart respectively back-and-forth movements to the other end of the same, a yoke slidably connected withl said earn-sector, -rods and a lever connecting said yoke to a second yoke adapted to transmit the forward thrust imparted by the camsector of one of the yokes of the car to the other yoke thereof, substantially as and for the purposes described.

5. A car-brake, comprising acam-sector, a pinion and rollers adapted to engage the camsector to impart respectively back-and-forth CHAS. A. KRUSE.

Witnesses:

C. CONETER, RICHARD TAYLOR. 

